题目

I’m not a little tired today after giving the room a thorough cleaning and I have never had                 today. A．as tiring a day as          B．as a tiring day C．tiring as a day as          D．day as a tiring as 答案：A3．已知，如图，在△AFD和△CEB中，点A，E，F，C在同一直线上，AE=CF，DF=BE，AD=CB．求证：AD∥BC．